A programmable digital video pattern generator controlled by microprocessor for basic research and clinical applications

A. G. Bezerianos, P. G. Papathanasopoulos

Research output: Contribution to journalArticlepeer-review

Abstract

A programmable digital video pattern generator controlled by a microprocessor is described as a part of any commercial or specific visual evoked potential analysis system. The generator handles all kinds of patterns (uniform, orthogonal and radial) with all known presentation modes (onset, offset and reversal) and resolution 640 × 200 square pixels. The frame rate of the generator is adjusted to be compatible to either low cost 50 Hz video monitor or expensive ones of higher frame rate. The operation parameters defined by software are: pattern selection, trigger mode, field selection and stimulation rate. The development of software applications for special research demands is desirable because of the control of the generator by a microprocessor.

Original languageEnglish (US)
Pages (from-to)1563-1569,1571-1572
JournalVision Research
Volume31
Issue number9
DOIs
StatePublished - 1991

Keywords

  • Checkerboard
  • Medium resolution
  • Programmable
  • Quadrant fields
  • Radial pattern
  • Video pattern generator

ASJC Scopus subject areas

  • Ophthalmology
  • Sensory Systems

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